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Finding the Fourth Proportional to 108,803.88, 163,052.64 and 86,518.26

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Solution

The fourth proportional to 108,803.88, 163,052.64 and 86,518.26 is: 129,655.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,803.88 : 163,052.64 = 86,518.26 : x
  2. Step 2: Convert to fraction form
    108,803.88/163,052.64 = 86,518.26/x
  3. Step 3: Cross multiply
    108,803.88x = 163,052.64 × 86,518.26
  4. Step 4: Simplify right side
    108,803.88x = 14,107,030,701.21
  5. Step 5: Solve for x
    x = 14,107,030,701.21/108,803.88
  6. Step 6: Final answer
    x = 129,655.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.